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Biol 405:Applied Ecology Question Paper

Biol 405:Applied Ecology

Course:Applied Biology

Institution: Kenya Methodist University question papers

Exam Year:2013

KENYA METHODIST UNIVERSITY

END OF 3RDTRIMESTER 2013 (DAY) EXAMINATION
FACULTY : SCIENCE AND TECHNOLOGY
DEPARTMENT : PURE AND APPLIED
UNIT CODE : BIOL 405
UNIT TITLE : APPLIED ECOLOGY
TIME : 2 HOURS

INSTRUCTIONS

Section A: Answer all questions

Section B: Answer question 4 and any other question

SECTION A – 30 MARKS

Question One

Describe four basic parameters used in defining populations and communities

(4 marks)

Explain what you understand by the following terms as used in ecological studies

(3 marks)

Wildlife management
Protected areas
Agoecology

State any three disadvantages of using importance value as an overall estimate of the importance of plant species in a community

(3 marks)

Question Two

Describe two main groups of producers common among ecosystems

(4 Marks)

Define coverage and calculate the coverage of a tree which diameter is 1.90 meters

(3 marks)

Stating reasons give two types of population dispersion in which point quarter method should not be used

(3 Marks)

Question Three

Write short notes on the following

Assisted natural regeneration

(3 marks)

Open access land resources

(3 marks)

Describe four effects of loss of soil fertility due to soil erosion

(4 marks)

SECTION B

Question Four

Using the set of data shown in the table below; number in plot (x) and observed frequency f(x), probability p(x) and the expected frequency F(x) from Poisson distribution with a mean (µ) of 1.2 individuals per plot

Number m
Plot x Observed
Frequency f(x) Probability
P(x) Expected
Frequency F(x)
0 27 0.27 30.1
1 39 0.39 36.1
2 22 0.22 21.7
3 11 0.11 8.7
4 1 0.01 2.6
>4 0 0.00 0.8

µ=1.2, density D=1.2, n=100 critical values of chi-square and theoretical density (D’) tables are provided

Determine whether the population distribution is random or not using

Chi-square goodness of fit test

(5 marks)

Ration of observed and expected density

(5 marks)

Question Five
Explain the major ways employed in national parks management (20 marks)

Question Six

Discuss four problems associated with uncontrolled utilization of natural resources

(8 marks)

Explain under what circumstances is transect sampling is transect sampling is considered superior to either plot sampling or point-quarter sampling methods?

(6 Marks)

Explain the main underlying causes of land degradation

(6 marks

Biol 405:Applied Ecology Question Paper

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